

PROJECT = usbbxr

MCU = atmega8

TARGET = usbbxr.elf

CC = avr-gcc

LDPRINTF = -Wl,-u,vfprintf -lprintf_min

AVRDUDE = avrdude
AVRDUDE_PROGRAMMER = usbtiny 
AVRDUDE_PORT = usb
AVRDUDE_WRITE_FLASH = -U flash:w:$(PROJECT).hex
AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(PROJECT).eep
AVRDUDE_FLAGS = -p $(MCU) -c $(AVRDUDE_PROGRAMMER) -P $(AVRDUDE_PORT) -B 5 -v

## Options common to compile, link and assembly rules
COMMON = -mmcu=$(MCU)

## Compile options common for all C compilation units.
CFLAGS = $(COMMON)
CFLAGS += -Wall -gdwarf-2 -DF_CPU=12000000UL -Os -fsigned-char
CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d 

## Assembly specific flags
ASMFLAGS = $(COMMON)
ASMFLAGS += $(CFLAGS)
ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2

## Linker flags
LDFLAGS = $(COMMON)
LDFLAGS +=  $(LDPRINTF) 


## Intel Hex file production flags
HEX_FLASH_FLAGS = -R .eeprom -R .fuse -R .lock -R .signature

HEX_EEPROM_FLAGS = -j .eeprom
HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"
HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0 --no-change-warnings


## Include Directories
INCLUDES = -I".." -I"../usbdrv" 

## Objects that must be built in order to link
OBJECTS = main.o usbdrvasm.o oddebug.o usbdrv.o 

## Objects explicitly added by the user
LINKONLYOBJECTS = 

## Build
all: $(TARGET) usbbxr.hex usbbxr.eep usbbxr.lss size
usbdrvasm.o: ../usbdrv/usbdrvasm.S
	$(CC) $(INCLUDES) $(ASMFLAGS) -c  $<

main.o: ../main.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

oddebug.o: ../usbdrv/oddebug.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

usbdrv.o: ../usbdrv/usbdrv.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

##Link
$(TARGET): $(OBJECTS)
	 $(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET)

%.hex: $(TARGET)
	avr-objcopy -O ihex $(HEX_FLASH_FLAGS)  $< $@

%.eep: $(TARGET)
	-avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0

%.lss: $(TARGET)
	avr-objdump -h -S $< > $@
	
## Size
size: ${TARGET}
	@echo
	@avr-size --mcu=${MCU} --format=avr ${TARGET}
	
## Program
program: $(TARGET)
	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
	

## Clean target
clean:
	-rm -rf $(OBJECTS) $(TARGET) dep/* $(PROJECT).hex $(PROJECT).eep $(PROJECT).lss

## Other dependencies
-include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*)

##PHONY :D	
.PHONY: all size program clean
	


